Reflective plates for a liquid crystal display device

Details Reflective plates for a liquid crystal display device Reflective plates for a liquid crystal display device

1975-01-29

1976-10-05

Corbin, John K.

350188, G02F 113, G02B 1320

Patent

active

039841766

ABSTRACT:
Reflective plates for liquid crystal display devices are provided. These plates comprise a composite of a transparent base material as a matrix and having incorporated therein a plurality of small transparent grains or granules. These granules have a different refraction ratio from the matrix material. The reflective composite plate member comprises said matrix and said grains and may have a reflective surface coated or attached to one face of said plate member.
Light entering into said composite reflective plate member is refracted by the grains thus providing a distinctive background appearance for the display device into which this plate is incorporated. The light is reflected variably because of the different refractive paths reaching the eye of the observer via the display device.

REFERENCES:
patent: 3833288 (1974-09-01), Nilsson
patent: 3881809 (1975-05-01), Fergason
R. F. Bush, P. E. Seiden, "Liquid Crystal Display Device," IBM Technical Disclosure Bulletin, vol. 14, No. 1, June 1971, pp. 223.
W. N. Jacobus, Jr. and K. P. Stuby, "Visible Light-Emitting Diode," IBM Technical Disclosure Bulletin, vol. 10, No. 8, Jan. 1968, pp. 1120.

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